@book{152823,
	author = {Gas Processors Association, GPA},
	title = {Calculation of gross heating value, relative density and compressibility factor for natural gas mixtures from compositional analysis},
	publisher = {Gas Processors Association, GPA},
	year = {1996},
	address = {Tulsa, Oklahoma},
	note = {Publicado conjuntamente con American Petroleum Institute. Equivale a API MPMS 14.5}
}